The data cable X2 is multi-core cables. Any unused wires are not assigned in the ReaderBox.
The unused wires of X2 must be isolated according to applicable regulations. This may be by means of double isolation and mechanical fixing by shrink sleeving or vulcanisation. The shrink sleeving or the vulcanisation must be suitable for at least 500 V and be within the temperature parameters of the device. The shrink sleeving / vulcanisation must not be light blue. When the data cables are shortened, this must also be kept in mind.